Not a diamond; this is a piece of rough blue glass or synthetic material.
Not a diamond; this is a piece of rough blue glass or synthetic material. · Raw / Uncut irregular fragment
Not applicable (Rough, unpolished raw material) Cut
Carat
Estimated at approximately 15-20 carats based on visual scale
Color
Deep Fancy Blue
Clarity
SI2 equivalent (moderate internal stress fractures and bubbles characteristic of glass)
Shape
Raw / Uncut irregular fragment
Overall Assessment
The specimen displayed is a vibrant blue raw glass fragment rather than a diamond or precious gemstone, possessing no diamond-like optical or physical properties.
Cut Quality
Not applicable (Rough, unpolished raw material)
Brilliance
Vitreous luster, lower optical return than a genuine diamond
Fire
Minimal dispersion, far below diamond standards
Scintillation
Poor sparkle due to lack of facet geometry
Proportions
Not applicable due to raw/uncut state
Symmetry
Asymmetrical raw fragment
Polish
Raw fractured surfaces, unpolished
Fluorescence
None to Faint inert
Inclusions
Conchoidal fracture lines, gas bubbles, and internal stress fissures typical of manufactured glass
Blemishes
Surface chips, rough edges, and abrasion marks
Origin
Man-made / Industrial or decorative glass production
Treatment Detection
No gemstone treatments applied; material is entirely synthetic glass
Estimated Value
Nominal decorative or collector value (under $10 USD)
Certification Estimate
Gemological laboratories would not issue a diamond certificate; likely identified as colored glass or slag
Investment Potential
None as a gemstone or investment asset
Similar Diamonds
None, as this is visually distinct from natural or synthetic diamond material
Setting Suggestions
Wire-wrapping or bespoke artisan bezel setting if used as a decorative mineral specimen
Care & Maintenance
Handle with care to avoid chipping the fragile glass edges; clean with mild soapy water
Interesting Facts
Bright blue slag and decorative glass are frequently mistaken for rare rough sapphires or blue diamonds by untrained observers